Improvement in flooring-clamp



.. Witnesses: A Inventor:

Adiluted gieten @wat @Wim Letters Patent No. 93,217, dated August 3,1869.

IMPRovEMnNT IN FLOORINGLCLAMP.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern:

Beit known that I, DAVID NEVIN, of Boulder Oity, Boulder county,Territory of Colorado, have invented a new and improved Floorin g-Clam pand I do hereby declare that the following is a full, clear, and exactldescription thereof, which will enable others skilled in the art tomake and use the same, reference being had to the accompanying drawing,forming part of this specification.

'lhis invention relates toimprovements in clampsV The lower bracket isprovided with a set-screw, D,V

for taking into the Wood, to prevent slipping, or a stud will answer aswell.

lThe upper bracket supports a hinged' tongue or guard, E, which may heraised to permit theapplioation ot the said stock to the joists, and'swings down by the side of the joists to prevent the -stock fromfalling laterally.

Near the top of the said stock a cranked lever, F,

is pivoted, having a sharp heel, G, for taking into the top of thejoists to prevent slipping.

It is also provided with a segmental rack, H, a short distance above theheel and projectingover the stock A.

L represents a clamping-lever, pivoted adjustably atits lower end to thestock A, and provided with a pawl, K, to engage with the said rack.

For operation, a clamping-block, L, is laid on the joists in front ofthe edge of the hoard-to bc clamped and nailed, and the stock A placedon a joist in front of the said block. The sharpened heel of the lever Fis then forced into the joist by pulling the set-screw or stud D in thebottom ofthe `)'oist. Theuthe clamp; ing-lever is pressed forwardagainst the block and has a powerful clamping action thereon.

lVhen suicientstrain has been appliedfthc pawl K may be engaged with'`the notched bar H, to hold the lever I until the board is nailed.

Having thus described my invention,

What I claim as new, and desire to secure by Let The fioor'ingmlalnp,constructed as described, of the right-angular stock A B C, having' theset-screw D add

